Automatic revebser



y HORN; 1 l mmm-Anc Huissen# 'j APPucATLoN man ocr.5. 1918.1- .lRelssued Mar'.-9,1920. `I r y l 14,8145'l oh 'ofzo VUNITED STATES`PATENT OFFICE.

JOHN HOI-RN, OF CLEVELAND, O-HIO.

AUTolrA'rIc nEvnnsEn.

remue nieu october r', 191e.v serial No. 257,384.

.To all 'whom it may conce/m:

" Be it known that I, JOHN HORN, a citizen of the-United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and use` ful Improvement in Automatic Reversers,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings.

The present invention relates to mecha-l nism for periodically andautomatically reversing a series of controlling devices, thusobviating'the necessity of hand control and overcoming theirregularities and uncertainties due to manual operation.

- Though not limitedto the kind of structure referred to, the mechanismis Well adapted for controlling a regenerativefurnace or similarstructure, wherein mechanism automaticallyand intermittently reversesairand fuel valves Without relying lon 4the memory and activity of a humanoperator.

Open hearthfurnaces, melting furnaces, brick kilns and the likefrequently require the reversal of fuel or air supplied and thepositionof stack or flue valves. This has ordinarily been done.manually. For instance, in the operation of open hearth furnaces, it hasbeen the custom for the attendant to reverse the valves about everyfifteen minutes, but this interferes with the attention of the operatorto the other operations of the furnace, and, furthermore, it relies onhis watchfulness and memory in effecting the reversals at the propertime. There have ,been many instances where the attendant damaged thematerial being produced or seriously injured the furnace by delaying orforgetting to make the reversals at the proper time.

I have overcome the ,difficulties mentioned and have introduced aregularity not attainable by hand operation, by providing a series ofactuators, each having a controlling device; a traveling member adaptedto engage tht` successive controlling devices, and a time controlleddevice governing'the movement of the traveler. If it be desired to op-Athe invention, as well as the more generic combination of cooperatingelements above referred to, is comprehended Within the invention hereinclaimed. Accordingly the invention may be best summarized as cornprisingthe lcombination of coperating elements for producing a novel result, aswell as thecombination and arrangement of parts lillustrated in thedrawings and hereinafter more fully explained.l The essentialcharacteristics .of my invention are summarized in the appended claims.

The drawings illustrate my invention embodied in a structure wherein theactuators Specification of Reissued Letters Patent. Reissued D131', 9,1920, v original no. 1351352, dated February as, 191s, serial No.170,910, med my 25, 1917. Application vvfmcontrol fluid pressurecylinders.l Figure 1 is a front elevation of suchembodiment, portionsbeing broken away and they-electrical part of the apparatus beingillustrated diagrammatically; Fig. 2 1s a diagrammatic view illustratingvalves which the actuators may'o'perate; Fig. 3 isa fragmentary plan,illustrating some of the fluid pressure valves; Fig. 4 is a fragmentarydetail illustrating a modification of the means for reciprocating thetraveler. l

In the drawings, the numeral 1 designates a fuel supply pipe throughwhich gas, oil or vother fuel is supplied to branch pipes leading to theopposite ends of the furnace, kiln, or the like. The branch pipes 2 arealternately opened and closed by means of suitable valves 3 and 4,' onevalve being closed While the other is open, and the valves beingreversed at intervals, to change the supply of fuel from one end of thefurnace to the other. l

Between the valves 3 and 4 is ahorizontal row of vertical cylinders 5,6, 7, 8 and 9, it being understood that any'suitable 'number ofthesecylinders can be used, according to the circumstances. The upperends of said cylinders have portions 10 bolted or otherwise fastened toa horizontal sup orting bar, or frame, l1 and the lower en s of saidcylinders have heads 12. Pistons 13 arey slidable vertically within thecylinders and have depending piston rods 14 extending through `the heads12. The piston rods 14 of the cylinders 5 and 6 canbe connected to theair valves at one end of the furnace, and

the piston rods of the cylinders 8 and 9 can' be connected to the ,airvalves at the other end of the furnace, while the piston rod of thecylinder 7 lcan be connected Vto the flue or stack valves. The pistonrods are connected by any suitable' operative connections with thevalves or devices, and since the present invention does not concern saidcon- I nections or the common valves or devices to which the iston rodsare connected, they need not be illustrated or described in detail. Stopscrews are threaded downwardly throu h the upper ends of the cylindersand are a justable to limit the upward movealso having an exhaust port22 o ening into the atmosphere. The p1pes21 o the valves 15, 16, 17, 18and 19 are connected to the.

lower portions of the respective cylinders 5, 6, 7, 8 and 9, while thepipe 21 o the valve 1 7 is connected to the upper portion of theintermediate cylinder 7. This cylinder`7 has the two valves 17 and 17',whereb theA piston of this cylinder is moved by uid pressure in bothdirections, while vthe pistons of the cylinders 5, 6, 8- and 9 aresimply raised by fluid pressure, and moved downwardly by gravity,assisted by the movement ofthe devices to which the piston rods arecon-f nected. f It is to be pressure cylinder operatin devicesareemployed, 'the connections rom, the pistons may be made in any mannerdesired. Thepistons may be single acting (operating in one direction bypressure and in the other by gravity) as in the case of the cylinders 5,6, 8 and 9, or the device may be double acting as in the case of thecylinder 7.

24 in Fig. 1 illustrates a series of actuators arranged in a horizontalrow. In case the fluid pressure Aembodiment shown is employed, eachactuatoris on the stem of a' valve as '3, 15, 16, 17, 17','

fluid controllin 18, 19 and 4. The members 24 accordingly close and openthese valves as desired, each valve remaining in its given positionuntil it is altered by the subsequent movement of its actuator. y

A nut 25 'travels upon a horizontal screw 26, arranged parallel with theseries of actuators 'and journaled in suitable bearings 27, and has atappet member 29 `which is preferably provided with a roller 30 forengaging the members 24, the roller 30 being movable into the jaw of therespectivemembers and after turning that member moving on out ofengagement therewith and understood that-when the fluid- 'into,engagement with the. `next member.

AThe nut is caused to reciprocate back and forth bythe rotation of thescrew. If the thread of the screw extends only infone direction,'thedirectionof its rotation is periodically reversed to reverse thedirection of travel of the nut. If the screw is of the right and lefthand variety, as-shown in Fig. 4, a continuous rotation of the screw inone direction causes a reoiprocation of Aa suitable nut, as is wellunderstood. Suitable means is provided for'rotating the screw as, forexample, an electric mo- -tor 31: geared by atworm 51 and worm wheel 52withythe screw shaft.' The motor is lauto- .maticalyvstopped at the endof each stroke ofthe traveling nut by switching mechanism operated bythe nut, as hereinafter described it is restarted after a suitableinterval of .time by any suitable time controlled mechanism.

' When the single thread screw of Fig. 1

is employed the motor is made reversible and rotatesin oppositedirections after each stopping, the mechanism' switched by the nut notonly opening the circuit but setting it for reverse reconnection by thetime con- Fig. 4, the motor Will always revolve in one direction and issimply periodically stopped for the desired length o time.

.While some time controlled device acting periodically at predeterminedintervals, is an important feature the invention is inde- This motorisshown in Fig. 1 as trolled device.` 'In the embodiment shown 1n l 10oV pendent of the .particularform of time controlled mechanism employed.y Any suitable device may be'employed for this purpose i which isoperative to restart the movement 'of the traveler afte'ra predeterminedperiod :of rest at each end of the stroke.

, I n Fig. 1, I have shown the timing device as clock mechanism 32 whichmay be assol ciated with an ordinary clock. 33 indicates a suitablearbor rotated bythe clock work which may have a revolution once every'hour or can be geared at an other desired speed. Mounted onthis ar r areshown 'metal disks 34 and3'4 insulated from each y other and each havingdiametrically opposed 4,projections 35-35 and 35"-35, the projections onone disk being shown as spaced'a quarter turn from those on the other.This providesv very readily for actuation of the motor every fifteenminutes if' the arbor 33 makes one rotation per hour. The projections 3535 onthe disk 34 in the embodi- `ment shown operate to bridge a pair ofcontacts 37 and provide a circuit for the 'travel of the nut toward theleft, while the contacts35 and 35 on the disk 34 contact with theterminals 36 and provide for movement of the traveler toward the right.Electric current is supplied'from any suitable source as indicated bythe'generator 38.

The automatic stopping device `for-'the motor at each end of the strokeis shown as consisting of the electric switches 39 and 40 arranged to beengaged and operated by the nut when it reaches the respective 'ends ofits movement, these switches being connected by a link 41 so that wheneither switch is opened the other becdmes automatically closed. In thecircuit .arrangement shown, the contacts on the clock mechanism are ofsuflicient size so that after bridging the corresponding pair ofterminals they remain in such contact at least until the traveling nuthas reached the opposite end of the stroke. Tracing the circuitsillustrated in Fig. 1,-

Ait will beseen that when the switch 39 is closed, this closes thecircuit between conductors 42 and 43, the former being connected withone terminal of the generator 38 and with the contact 36, and the latterbeing' connected withone terminal of the motor 31. The switch 40 servesto close the circuit between'said terminal of the motor 3-1` and` aconductor 44, which'is connected tov one Contact 37 and to the` otherterminal of the generator 38. The other members of the pairs ofcontacts36 and'37 are connected by a conductor 45 with theother terminalof the motor 31. The lines 43 and 45 lead to the field or armature ofthe motor 31, other` lines, as 48 and 49 lead from the source of currentto the armature or field, as the case may be, independently of the clockand contacts. As shown the switches 39 and 40 are alternatelyo erated bythe U-shaped bracket 46 carried y and depending from the nut 25.

With the parts arranged as illustrated in Fi 1 and 2, the nut 25 is atthe left hand en of the screw 26 andthe member 46 has wlnch they areconnected. The valves 17.

18 and 19 connect the upper portion of the .cylinder 7 and lowerportions of the cylinders 8 and 9 with the orts opening into Y theatmosphere, where y the pistons of cyl- 'inde-rs 7 can move upwardly,whilethe pistons of cylinders 8 and 9 can n'iove downwardly.

Shortly after the nut comes into the posi- 'tion shown in Fig. 1 thecontact 35 will cease to bridge the terminals 37; then after a suitableinterval of time has elapsed since it came into that position, one ofthe switches or bridging members 3'5 will be brought by the 'clock intoengagement with the contacts 36, to |bridge the gap therebetween. Thiscloses a clrcuit including the generator 38, conductor 42, contacts 36,conductor 145, motor 31, ,switch 40and conductor 44, the switch '40having previously closed when the switch 39 opened. The motor will nowrotate the screw in the direction to cause the nut to travel toward theright. The member 29 is therefore carried under the members24 ,insuccession, and in contacting with the right hand depending arms of saidmembers 24 will swingl them toward the right, the leftfhand arms being,

swung downwardly to ydepending position.

This reverses the lvarious actuators 24 in vsuccesslon and in theembodiment shown reverses one by one. after the other the valves"` 3,'15, 16 and 17 which were open, therefore 3, 15, 16, 17, 17, 1s, 19 and4., The valves-1 85 become closed, and the valves 17', 18, 19 and 4which were closed become open. v The valves 15, 16 Vand 17accordinglyestablish communication between the lower Aportions of thecylinders 5, 6 and 7 and the atmosthev respective pistonsY to phere,"ermittin move ownwa y. Valve 17 establishes communication between thepipe 20 and upper portion of the cylinder 7, 'whereby the respectivepiston is forced downwardly by pressure fluid, while valves 18' andl 19now` establish communication between the pipe 20 and lower portions ofthe cylinders 8 and 9, whereby their pistons are forcibly raised.` Valve4 is 'openedfto reverse the flow of fuel to the other end of thefurnace.A

' When lthe nut 25 reaches the 'end of its lolo movement to the right,lthe member 46 opens' the switch 40, and closes the switch 39.

Switch 40 being opened will -open the cir-l. cuit above-described,thereby stopping the motor 31, after which the res ctlve switch' member35 is' moved away tacts 36. l

Aftery another interval of time, the next oms-the oon-'1 Y switch member35 engages the contacts 37,

as seen in Figfl, to close the circuit including the generator 38,conductor 42, -switch 39 which is now closed, conductor 43, motor 31,conductor 45, contacts 37 and conductor The motor 31 is therefore againrotated. This rotation will ybe in the same direction if the right andleft hand screw structure of Fig. 4 is employed, .but intheembodimentofy Fig. 1 it is in the opposite direction, as the reversedpolarity of current supplied in Fig. 1 indicates.' This oppositeArotation of the motor rotates the screw 26 in the opposite direction,thereby -moving the nut 25 to the left. In this movement the variousactuators will be successively engaged and each reversed. In theembodiment shown, this will reverse the Various valves and bring theminto the positie-n first described. When the nut 25 reaches the end' ofits movement to the left, it o ens the switch 39 and .closes the switch40, t e open- 1n .of the `switch 39 stopping themotor.

.t will-thereore'be seen that the nut 25,

when it starts from either direction travels continuously to; the othere dof its movement and then rests until t e timecontrol mchanismestablishes an electric connection, vwhen the nut travels Ito the otherend of its movement The speed of travel -Will of course depend on thespeed of the motor and the' gearing and may be variedaecord ing to therapidity with which itis desired --Ato operate the successive devices.The various devices are arranged in the order in which it is desired tohave them operate; for instance, infcontrolling an Iopen health or'naturalgas feed furnace, the valve 3 may 'control natural gas to oneend of the furnace; the valves 15` and 16 the corresponding air supply;the valves 17 and17 the stack or Hue; the valves 18 and 19 air supply tothe other end ofthe furnace, and

-nally the valve 4, the natural gas supply to cessively engage and movethe actuating devices, vand meansfor controlling the reciprocat-lon. 1

. 2. In a .device of the character described,

the combination, of a ro'w of movable actuators, a reciprocatingtraveler having means for engaging and moving .the actuators, means formoving the traveler continuously from either end of its movement to theother, and means for automatically controlling the traveler at eitherend of its movement.

3. In a device of the character described, the combination of a seriesof movable actuators, a traveler adapted to successively engage suchactuators, a screw for-operating the traveler. means for rotating the.screw, and means for controlling such rotation.

4. In a device of the character described, the combination of a row ofindependently movable actuators, a sore1 parallel with 'saidrow, a nutmovable on said screw. means carried by the nut for engaging and movingthe actuators as the nut travels, and means for rotating the sci-evs. i

5. In a device of the character described, the combinationof a series ofmovable actuators. a screvv. a nut movable on said screw. means carriedby the nut for engaging and moving the actuators as the nut travels,means for rotating the screw in a manner to cause the nut to travelfirst in one direction and then in the other, and means con# trollingthe rotation of the screvv.

G. -In a device of the character described,

the combination of a row of movable actuators, each adapted to turnabout -an axis and having two projecting arms, a traveler adapted toengage one arm of each actuator in one direction of movement and movesuch traveler, means for guiding it parallel-with said row of actuators,said traveler having a `device adapted to successively enter the spacebetweenrthe pairs of arms and engageone arm andvt'hereby turn the-corresponding actuator,'and means for reciproeatingl` the traveler.

Y 8. lie combination of a series of actuators arranged in a ro1 and eachadapted to turn on its axis and having two arms projecting. at an angleto each other, a

traveler guided parallel with said row and having a ta pet adapted toengage one o f such pair o arms of each actuator in one direction of thetravel and the other arm of each pair in the other direction of travel,and means for reciprocating the traveler.

9. "The combination of a series of actu/ ators arranged in a row andeach adapted to turn on its aixis and having two arms pro A jecting atan angle to each other, a traveler guided parallel with said row andhaving a tappet adapted to engage one of such pair of arms of eachactuator in one direction of movement of the traveler and the otherarmofgeach pair in the other direction of movement, a. rotatable screwparallel with the guiding means, and a nut carried by the travelerengaging the screw.

10. The combination of 'a series of actuators arranged in a row and eachadapted to Aturn `on its axis and having tvvo arms projecting at anangle. to each other, a traveler guidedparallel with said row and havinga tappet adapted to engage one of such pair of arms of each actuator inone direction of movement of the traveler and the other arm of each pairin the other direction of movement` a rotatable screw, a nut carried b vthe traveler engaging the screw, an electric motor for rotating thescrew, switching mechanism operated 'by the traveler at each end of itsmovement for changing the electric connections to the motor, and adevice for closing such connection.

1l. -In a device of the character described,

the combination ofa series of movable actu-v ators, a reciprocatingtraveler adapted to successively engage and move the various actuators,and means for reciprocating the traveler, and controlling devicesengaged by ilo the traveler at either end of its movement i for stoppingthe operative .movement 'of the reciprocating means.,

12. In a device of the character described,

the combination of a series of actuators, a reciprocating traveler'adapted to successively engage and move the various actuators, means forreciprocating the traveler, controlling devices actin at either end ofthe movement for stopp1ng-thel operative movement of the reciprocatingmeans, and

a device. for starting the operationl of the' reciprocating means. l 13.In a ldevice of the character described,

the combination of a row of actuators, a*

reciprocating device adapted to successively engage and operate tl'ieactuators, mecha.. nism includin an electric motor for reciprocatingsaid a device for lclosingitheproper circuit to Start the motor, andelectric switches con-v trolled by the travelerat either end of itsvi'eciprocation to open tlieucircuit and stop the motor. I

14. In a. device of the character described,.'

the combination of a series of actuators arranged in a row and eachmovable, a' pair of guide rods parallel with the row of actuators, atraveler mounted .on said guide rods and carrying means for engaging theactuators successively, and ,means between the guide rods for moving thetraveler.

15. In a device of the character described,-

the combination of a series of actuators arranged 1n a row and eachmovable, a pair o'f gui e rods parallel with the row of actuators,v atraveler mounted on said guide rods and carrying means forl engaging theactuators successively, a nut carried by the traveler, and a screwbetween the guide rods and parallel therewith which said nut engages.

' 16. In a device of the character described, the combination of aseries of actuators arranged in a row and each movable,'a lpairl ofguide rods parallel with the rovi7 of acrods, and carrying meansforengaging the actuators successively, a nt carried by the traveler, ascrew between the guide rods and' lparallel therewith which said nutengages,

means for rotating the screw and mechanism engaged by the traveler ateach end of' its the combination of atrow of independent actuators, areciprocating traveler having erable by the traveler at evice, circuitsfor said motor,

`has a'cted vupon the various the traveler at eler, and meansforrotating the screw.

19. In a device of the character described, the combination of a seriesof. movable actuators, a traveler adapted to .successively engage suchactuators, a screw for moving .the traveler, an electric motor forrotat- .ing the screw, switches for the electric motor. and means formoving the switches opthefrespective ends of its movement. f I j p 20.In a device of the character described,

the combination of arow of movable actuators, a screw parallel with nutmovable on said screw, the nut for engaging and tors as 'the nuttravels, means for rotating the screw, andmeans operated by the travelerat each end of its movement for stopping the operation which drives thetraveler.

21. Ina device of the character described,

`said row, a means carried by moving the actuathe combination of a rowof movable actuators, a screw parallel withisaid row, a nut movable onsaid screw, means carried by the mrt for engaging and.moving theactuators -as the -nut^ travels, means for rotating the screw, and meansfor periodically starting the movement of the nut after it,

actuators.

22. In a device fof the character described, lt-he combination of a'rowof movable actuators, veach adapted to turn about ai'i aXis and havingtwo projecting arms, a traveler adapted to engage one arm of eachactuator in one direction of movement and move such actuator, and engagethe other arm of the respective actuators in the other direction ofmovement and return them to the irst position, a screw parallel with theactuators for reciprocating the traveler, and means for rotating thescrew. tuators, a traveler mounted on said guide l 23, In a device ofthe character described, the combination, of a row of actuators, eachmovable about an axis and-providedwith a pair of arms at an angle toeach other, a traveler, means for guiding it parallel With said.4 row ofactuators, said traveler having a device adapted to successively enterthe spaces between the pairs of arms, and engage one armand thereby turnthe corresponding actuator, a screw for moving the screw, switchesfor'the electric motor, and means for moving the Switches operable bythe respective ends of its movement. fp 24..The combination 'of a seriesof'actuators, arrangedpin a row and'each adapted 18. In a device of thecharacter described,

to turn .on its axis and having two arms an electric motor-'for rotatingthe 4 projecting at an angle to. each other, a

traveler, guided parallelwith said row and having a tappet adapted toengage one of such pair of arms of each actuator inv one direction ofmovement of the travel and the other arm of each pair in the otherdirection of movement, -means for reciprocating the traveler, and meansfor periodically starting the movement of the traveler after it hasacted upon the various actuators.

25. The combination of a series of actuators, arranged in a row and eachadapted to turn on its axis and having two arms projecting at an angletoeach other, a trav- `eier guided parallel with said row and having atappet adapted to engage one of such pair of arms of each actuator'i-none direction of movement of the travel and the other arm ofv each pairin the other directionv of' `movemei it, a screw for moving thetraveler,

an electric motor for rotating the screw,l

switches lfor the electric motor, andmeans for moving the switchesoperable by the traveler at the respective ends of its movement.

26. Ina device ofthe character described,

the combination of a series of actuators, a reciprocating. traveler,adapted to successively engage and move the variousactuators, and meansfor reciprocating the traveler, andcontrolling devices engaged bythetraveler at either end of its movement for stopping the operativemovement of the reciprocating means, and means for periodically startingthe movement of the traveler after it has acted upon the variousactuators.

27. In a device of the character described, the combination of a seriesof actua-tors arranged in a row, and each movable, a pair of guide rodsparallel 'with the row of actuators, a travelermounted on said guideVrods and carrying means for engaging t-lie actuators successively, anut carried by the traveler, a screw between the guide rods and paralleltherewith, which said nut engages',

an electric motor for rotating the screw, switches for the electricmotor, and means for moving'- thc switches -operable by the traveler atthe respect-ive ends of its movenient. l

2S. In a device ot the character described,

the combination of movable actuating de-l vices, a traveler having meansfor successively engaging and moving the actuating devices, mechanismfor reciprocating the traveler, val-ves controlled by the respectiveactuators, fluid pressure mechanism controlled by the valves. andn'ieclianisin for starting the movement ot' the traveler.

29. In a device of the character described,

the combination, of a row ot actuators, a rcciprocatingtraveler havingmeans for engaging and moving the actuators, means for moving -thetraveler continuously from either end of its movement to the other, and

means for automatically controlling a period of rest for the traveler ateither end of its startin movement, valves controlled bythe respectiveactuators, fluid pressure mechanism controlled by the valves, andmechanism for starting the movement of the traveler.

30. In a device of the character described, the combination of a seriesof movable actuators, a traveler adapted to successively engage suchactua-tors, a screw for'operating the traveler, means for rotatingthescrew, valves controlled by vthe` respective actuators, fluid pressuremechanism controlled by t-he valves, and mechanism for starting themovement of the traveler'` g 31. In a device of the character described,

the combination .of a .row of movable actuators, a screw parallel withsaid row, a.' nut movable on said screw, means carried by the nut forengagingand moving the actuators as the. nut travels, means for rotating.the screw, valves controlled'by the respective. actuators, fluidpressure mechanism controlled by the valves, and mechanism for startingthe movement of the traveler.

,32. In a device of the character described, the combination of a row ofmovable' actuators, ascrew parallel with said row, a

nut movable on-said screw, means carried by the nut for vengaging andmoving the actuators as the nut travels, and means for rotating thescrew in a manner to cause the nut t-o travel first in one direction andthen in the other, valves controlled by the respective actuators, fluidpressure mechanism controlled by the valves, and mechanism for startingthe movement of the traveler;

33. In a device of the character described, the combination of a row ofmovable actuators, each adapted to turn about an axis and having twoprojecting a'rms, a traveler adapted to engage one arm of each actuatoriii-one Adirection of movement and move such actuator and engage theother arm of the respective actuators in the other direction of movementand return them to the first position, a screw for moving the traveler,an electric motor for rotating the screw, switches for the electricmotor, and means for moving the switches operableby the traveler at 'therespective ends of its move-l nient. v

34C.- In a device of the character described, the combination of a ro'wof actuators, each movable about `an axis and provided with a pair ofarms at an angleto e'ach other, a traveler, 'means'for guiding itparallel with vsaid row of. actuators, said traveler vhaving a deviceadapted to successively enter the' space between the lpairs of arms, andengage one arm and thereby turn th'e correspondingactuator, valvescontrolled by the respective actuators, uid pressure. mechanismcontrolled by thevalves, Aand mechanism for the .movement of thetraveler.

35. he combination -of a series' of actuators arranged in a row 'andeach adapted to lite1 'tappet adapted to engage one turn on its axis andhavingtwo arms projecting at an angle to each other, a traveler guidedparallel with said row and having a of such pair of arms of eachactuator in one direction of movement of the travel and the other arm36. In an automatic reverser, in combination, a series of valves, atraveler mounted for -reciprocation .past the valves, a tappet on thetraveler for successively operating the valves, mechanism forreciprocating the traveler, and means controlled by the trav- 'eler for.operating the Areciprocating mechanism.

37. An automatic reverser, comprisin a series of fluid pressure valves,a trave er reciprocable past-the valves, a tappet on the traveler forsuccessively. operating the valves, means for reci rocating thetraveler, a member extending iiom the traveler, and means controlled bythe said member for operating the reciprocating means.

` duit 'a fluid 38. An automatic reverser, comprising a conduit, aseries of flu1d pressure valves v1n the' conduit for controlling thefluid pressure.

supply, a screw actuated traveler reciprocable past the valves, a tappeton the traveler for successively operating the valves, and -I'neanscontrolled by the traveler for operating the screw. 39. An automaticreverser, series of cylinders, pistons a luid pressure supply conduitcommunicatin w1th the cylinders, valves in the conor controllm the fluidly, a traveler reclprocable comprising a ast the cyliners, a tappet onthe ltrave er for succes-v sively operating the valves, means forreciproc'atmg the traveler, a member depending from the traveler, andmeans controlled by the depending member for operating the reciprocatingmeans.

40. An automatic reverser, series ofcylinders, pistons in the cylinders,

ressure supply conduit communicatin with the cylinders, valves 'in the'conduit or controllm -the fluid pressure supply, a travelerreciprocable ast the cylinders, atappet on thetrave sively operating thevalves, means for reciprocatmg the traveler, a member depending from thetraveler, and'means controlled by the depending member for operating thereciprocating means.

41. An automatic reverser, comprising'a series of cylinders, pistons inthe cylinders,

eating with the cylin rseries of cylinders,

.reciprocating mechanism,

traveler after'it has valves.

' eating ing the screw,

in the cylinders,

comprising aj ators, a traveler mounted on said l means carriedA therebyfor engaging the er forV succes-'- duit for controlling the fluidpressure suppl a screw actuated traveler reciprocable past the valves, atappet on the traveler Jfor successively operating the valves, and meanscontrolled by the traveler for operating the screw.

42. An automatic reverser, .comprising a pistons in the cylinders, afluid pressure supply. conduit communieating with the cylinders, valvesin the conduit for controlling thelluid pressure sup-. ply, a travelermounted for reciprocation before the cylinders, a tappet on the travelerfor successively operating the valves, -mechanism for reciprocating thetraveler, means controlled by the traveler for operating the and mea'nsfor periodically starting vthe movement ofthe 4 3. An automaticreverser, series of cylinders, pistons .in a lluld comprising a pressuresupply conduit communiwith the cylinders, valves in the conduit orcontrolling the fluid pressure supply, a traveler reciprocable beforethecylind ers, a tappet on the 4traveler for success1vely operating thevalves, a screw for movlng the traveler, an electric motor forrotatswitches for the electric motor, and means for moving the switchesoperable bythe traveler, at the respective ends of its movement.

4 4. An automatic reverser, comprising a sei-les of cylinders, pistonsinthe cylinders, a 'luid pressure supply conduit communieating with thecylindersvalves in the conduit for controlling the fluid pressuresupply, actuators therefor, a screw for Vmoving the traveler, anelectric motor for rotating the screw, switches for theelectric motor,pressure supand means for moving the switches; operable by the travelerat the respective ends of its movement, and means for periodicallystarting theA movement of the traveler after it has acted upon thevarious actuators.

45. In a device of the combination of a series of actuators ar. rangedin a row an'd 'each movable, a pair of guide .rods parallel with the rowof actu;

actuators successively, anut carried by the traveler, and a screwbetween the guide rods ,and parallel therewith whichrsalid nut engages,means for rotating the screw, and

valves controlled by the respective actuators, andjuid. pressuremechanism controlled by the valves, mechanism for Starting'the move#Vment Vof the traveler, and means for, automatically stopping thelmovement of the traveler at-the end of a stroke.

46. The combination of a series of quarter turn valves arranged in arow., operating devices therefor mounted .on the stem of acted upon thevariousA the character described,

the cylinders,

guide rods,

each valve and having two engageablemembers separated by a V-shapedspace, a traveler mounted to move parallel with said row and adapted toengage and swing one of said members on each valve in one rection oftravel and the other member on each valve in the opposite direction oftravel,

a driving device for reciprocating the traveler, means device at eachend of thev travel, and a device for starting the operation of the`driving device.

47. A series of actuators arranged in a row and each having twoengageable members at an angle to each other, a traveler mounted to moveparallel with said row andV adapted Vto engage and swing oner of saidmembers of each actuator in one directi'on of travel and the othermemb'er of each actuator in the opposite 'direction of travel, a drivingdevice for reciprocating `the traveler, means for stoppingv the drivingdevice at each end of the travel, and a de.- vice for starting theoperation of the driving device.

48. A yseries'of actuators arranged in a' row and eaclifhavingl twoengageable members at an angle to each other, a screw parallel withsaidrow, a traveler having an en `@agement with the screw and adapted toengage and swing one of said members'oi` each'act'uator in one directionof travel and the other member of each actuator in the.

opposite direction of travel, means or rotating the screw 1n a manner tocause the traveler to reciprocate, means for stopping' the rotation ofthescrew at each end of the travel. anda device |lor starting therotation of the. screw.v y l 495A series of actuators arranged in a rowand each having two engageablev` memf bers at an angle to each other, ascrew parallel with said'row, a pair of guides Aparallel with the screwand respectively on opposite sides thereof, a traveler mounted on saidguides 'and intermediately engaging the screw and adapted to engage andswing one of said members of each actuator in one direction'ofl travel'and the other 'member of each actuator in the opposite direction -oftravel, means -for rotating the screw in a manne.- to cause the travelerto reciprocate,

. means for stopping the rotation of the screw .guide and a at each endof the trav'el, anda device for starting the rotation of the screw.

50. A series of actuators arranged -in ra rou'v and leach having twoengageable members at "an angle to each other, a guide parallel withsaid row, a traveler mounted on said roller adapted to engage and swingone of said members of each actuator in one direction of, travel and-the other member` of each actuator in the opposite direction of travel,means for causing the trayelerito reciprocate, means for stopping forstopping the driving means for rotating 1 the movement of the traveler'in each ,direction, and a device 'for starting themov'ement of thetraveler.

5l. The combination 'of a, plurality ot'` movable actuators adapted toextend in the same direction, a plurality of 'mechanisms controlled bySaid' actuators and being in mutually reversed condition when theactuators extend in thesame direction, a traveler adapted tosuccessively engage the actuators, and means for operatingthe traveler,whereby th'e mechanisms are changed in condition whilepreserving'the'mutual reversed relationship between them.

52. yThe combination of a series-of valves,

Alnovable actuating devices therefor adapted to extend in' the samedirection and con- 'nected'to the valves in such manner 4that some ofthe valves are open and others are closed when the actuators all extendin the same direction, a traveler adapted Ito successivel-y engagesaidactuators and change the direction of all of them, whereby when thetraveler is operated the valves which were open l become closed and thevvalves which werel closed become open.

53. The combination of a series of'valves, movable actuating devicestherefor adapted to extend in the same direction and connectedto thevalves in such manner that some of the valves are open and others areclosed when the actuators all extend in the `same direction, a traveleradapted to successively engage said actuators and change.

the direction of all of them, mechanism for moving the traveler ineither direction, mechanism for stopping the movement of the traveler ineach direction, and .mechanism for restarting the movement ofl the.

traveler following each stoppage thereof.

54. The combination of a screw and nut, one of such members, a devicefor control ng such rotation, a traveler operated by the screw and nut,and a series of individually movable devices successively operated bythe traveler.

55. The combination of a screw, means for rotating the screw', a device'for starting such rotation, automatic means for stopping .Y

, the rotation, a traveler carrying a'nut engaging the screw, andmechanism operated by the traveler.

.56. The combination with a set of devices adapted to be operated., ofmechanism for efectingsuch operation, a device for periodically andautomatically starting the operation of said mechanism,and'intermedieration, whereby the mechanism has a period of rest between'successive startings by the device.

t 57. The combination with'a set of devices adapted to beperated, ofmechanism for eecting such operation, means for startin 'the operationof the mechanism mentionel vvately operating means' for stopping theopoperated periodically and means for stopping the mechanism immediatelysucceeding each complete operation thereof,' whereby the mechanism hasaperiod of rest materiallv exceeding its period of operation.

58. he combination with aset of devices adapted to be the motor, wherebythere is apperiod of rest between .successive startings.

59. The combination with a set of devices time, scrlew and a travelingnut, means for starting the rotation of such screw at comparativelydistant intervals,

kthe nut, of rest. materially exceedlng its periodof operation.

Signed at Cleveland, Ohio, Sept. 20, 1918.

' JOHN HORN.

